Cost to build a flat roof extension in Nw9 7

Flat roof extension cost in Nw9 7

A flat roof extension is a great way to add extra space to your home without splashing out on the costs of a pitched roof extension. Often exempt from planning permission rules, you can build a flat roof extension up to 3 metres in height as long as it's not visible from a road. But how much do they cost in Nw9 7?

A flat roof extension ranges from the cheapest of £21,848 (Golden Genesis Construction and Design based in NW4) to the dearest of £21,944 (Milkov and Son Construction based in NW4), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.

Find out how much your flat roof extension will cost in Nw9 7 by posting a job with HaMuch. We'll send it to extension builders in Nw9 7.

Estimates for flat roof extension near Nw9 7

How much does a flat roof extension cost?
Flat roof extension cost per m2
Factors affecting the cost of flat roof extensions
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	Job	Estimate
	Underpinning a house	£17,396
	Build a two storey extension	£87,844
	Build a timber frame extension	£25,896
	Install a swimming pool	£80,896
	Cost to build a single storey extension	£52,920
	Cost to build a side return extension	£40,330
	Install an RSJ	£2,096
	Build an outbuilding	£9,896
	Build a mansard loft conversion	£51,896
	Cost of a loft conversion	£32,775
	Build a kitchen extension	£41,896
	Build a hip to gable loft conversion	£41,896
	Build a granny annexe	£86,896
	Build a garden office	£9,896
	Convert a garage	£15,896
	Build a new garage	£18,396
	Build a flat roof extension	£21,896
	Build a dormer loft conversion	£41,896
	Lay a concrete foundation	£6,146
	Convert a bungalow loft	£28,896
	Basement conversion cost	£36,330

Business name	Flat roof extension cost
WHITE EAGLE CONSTRUCTION LTD, Colindale, NW9	£21,864
Milkov and Son Construction, Greater London, NW4	£21,944
Golden Genesis Construction and Design, London, NW4	£21,944
Golden Genesis Construction and Design, London, NW4	£21,848
Up House Ltd., Unit 5B Atlas Business Centre, Oxgate Lane, London, Greater London, NW2	£21,848
AG design-build, Greater London, NW4	£21,944
INIK Construction Ltd, London, Greater London, NW9	£21,848
SINCLAIR BUILDERS, Brent Cross, NW4	£21,864
InConstruction Services Ltd, London, Greater London, NW9	£21,848
Hallpark Construction, Unit B2 Connaught Business Centre, Hyde Estate Rd, London, Greater London, NW9	£21,848
Space Dimensioned Ltd., Greater London, NW9	£21,944
Space Dimensioned Ltd., Hyde House, The Hyde, London, Greater London, NW9	£21,848
M R C Plumbing & Heating Ltd, 38 Renters Avenue, London, Greater Londo, NW4	£21,944
Secta Building Services Ltd, Cricklewood, NW2	£21,864
Z&S Construction, London, NW2	£21,944
Bathrooms and kitchens specialist, West Midlands, NW9	£21,944
MS Maintenance, Colindale, NW9	£21,888
BKB Building Contractors, Colindale, NW9	£21,888
dc Designing Centre, Londonderry, nw2	£21,944
HR Building Solutions Ltd, Greater London, NW9	£21,944
J & C BUILDING CONTRACTORS LTD, Colindale, NW9	£21,864
Pineapple Engineering Ltd., London, Greater London, NW2	£21,848
Quality Plastering and Building Limited, London, NW10	£21,944
Anahita Design and Development, London, NW2	£21,944
Anahita Design and Development, Clitterhouse Farm House, 60 Claremont Road, London, NW2	£21,848

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Flat roof extension cost in Nw9 7

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Flat roof extension cost in Nw9 7

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